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E u r o S c i C o n J o i n t E v e n t s o n
Plant Science, Tissue Engineering
and Parasitology
December 03-04 , 2018
Amsterdam, Nether l ands
International Journal of Applied Science - Research and Review
ISSN: 2394-9988
Plant Science | Tissue Engineering | Parasitology 2018
Biography
Faisal Nadeem has completed his Masters’ degree in
Agriculture-Soil Science fromPakistan and then got admitted to
China Agricultural University, Beijing, China for PhD. He is in final
year of his PhD and his research focuses on morphological,
physiological and molecular response of foxtail millet to
different nitrogen regimes. He has published one research
article as first author and the other as second author during his
PhD tenure so far.
fnadeem90@gmail.comFaisal Nadeem et al., Int J Appl Sci Res Rev 2018, Volume: 5
DOI: 10.21767/2394-9988-C2-006
F
oxtail millet (FM) [
Setaria italica
(L.) Beauv.] is an important grain and
forage crop well adapted to nutrient-poor soils. Studies related to its
adaption to nutrient limitation are rare. How FM adapts to low nitrogen (LN)
at the morphological, physiological, and molecular levels remains worth
studying and to date, little is known about that. Low nitrogen (LN) led to lower
chlorophyll contents and N concentrations, and higher root/shoot and C/N
ratios and N utilization efficiencies in FM variety Yugu1 under hydroponic
culture. A smaller root system as indicated by significant decreases in total
root length; crown root number and length; and lateral root number, length, and
density; was in contrast to enhanced biomass accumulation in the root under
LN. Increased average diameter of the LN root, potentially favourable for wider
xylem vessels or other anatomical alterations favourable for nutrient transport
facilitated enhanced carbon allocation towards root. Consistent with smaller
root system IAA and CKs levels were lower whereas higher levels of GA may
promote root thickening under LN. Further, up-regulation of
SiNRT1
.
1
,
SiNRT2.1
,
and
SiNAR2.1
expression and nitrate influx in the root and that of
SiNRT1.11
and
SiNRT1.12
expression in the shoot probably favoured nitrate uptake and
remobilization as a whole. Lastly, more soluble proteins accumulated in the
N-deficient root likely as a result of increases of N utilization efficiencies. Such
excessive protein-N was possibly available for shoot delivery. Thus, FM may
preferentially transport carbon toward the root facilitating root thickening/
nutrient transport and allocate N toward the shoot maximizing photosynthesis/
carbon fixation as a primary adaptive strategy to N limitation.
A smaller root system with enhanced biomass
accumulation and transporter expression in
foxtail millet
[Setaria italica (L.)
Beauv.] under
low nitrogen
Faisal Nadeem, Zeeshan Ahmad and Xuexian Li
1
MOE Key Laboratory of Plant-Soil Interactions-China Agricultural University, China
2
Institute of Crop Sciences-Chinese Academy of Agricultural Sciences, Beijing, China